---
product_id: 48440358
title: "OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change"
brand: "diy crafts"
price: "€ 13.00"
currency: EUR
in_stock: true
reviews_count: 13
category: "Diy Crafts"
url: https://www.desertcart.com.cy/products/48440358-otoolworld-watch-case-open-ball-friction-ball-watch-case-open
store_origin: CY
region: Cyprus
---

# Pre-filled with air for optimal grip Scratch-free screw back opener 2.5-inch diameter precision ball OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change

**Brand:** diy crafts
**Price:** € 13.00
**Availability:** ✅ In Stock

## Summary

> ⚙️ Unlock your watch’s secrets with the friction ball that pros swear by!

## Quick Answers

- **What is this?** OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change by diy crafts
- **How much does it cost?** € 13.00 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/48440358-otoolworld-watch-case-open-ball-friction-ball-watch-case-open)

## Best For

- diy crafts enthusiasts

## Why This Product

- Trusted diy crafts brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Pros:** Highly rated tool favored by watch repair experts and enthusiasts alike.
- • **Air-Inflated Grip:** Pre-filled friction ball ensures maximum hold; refillable for consistent performance.
- • **Compact & Portable:** 2.5-inch diameter fits comfortably in hand for precise control.
- • **Effortless Case Opening:** Twist open stubborn screw-back watches with ease and no scratches.
- • **Versatile Compatibility:** Ideal for screw-back cases; pairs perfectly with a case holding vise for flawless operation.

## Overview

The OTOOLWORLD Watch Case Open Ball is a 2.5-inch diameter air-filled friction tool designed specifically for opening screw-back watch cases without scratching. Lightweight and refillable, it offers a professional-grade grip that simplifies battery changes and repairs, making it a top choice among watch repair kits with over 1,200 positive reviews.

## Description

OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Opener Ball Battery Change

Review: Simple and very effective. - It worked amazingly, I was surprised how easily unscrewed the back of my both watches.
Review: Opened a s stubborn watch case back - Worked great on a stubborn watch back. I saw a review video by a watch repair person that went over the various types of screw case back opening tools. Surprisingly these ball types came out near the top. What's good about these is there is no chance of scratching the case. This tool is for screw back cases only. Snap backs need a different type of wedge tool. When coupled with a case holding vise opening a screw back case is rather easy. It requires some effort and patience. Make sure the ball and case back are clean. No choice of color but I got blue.

## Features

- The ball is already full of air + 1 ball needle
- Great for opening watch cases , Hold the watch in one hand and in the other hand, press the friction ball onto the back of the watch.
- Start twisting to unscrew the watch back.
- 2-1/2 inches in diameter
- and you can fill air by the basketball pump yourself if need full air

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B07417BNF9 |
| Best Sellers Rank | #36,066 in Clothing, Shoes & Jewelry ( See Top 100 in Clothing, Shoes & Jewelry ) #24 in Watch Repair Tools & Kits |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,254) |
| Date First Available  | July 9, 2017 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | diy_product_B07417BNF9 |
| Manufacturer  | OTOOLWORLD |
| Product Dimensions  | 5 x 3.5 x 4.53 inches; 1.1 Pounds |

## Product Details

- **Brand:** DIY Crafts
- **Color:** gold
- **Finish Type:** Polished
- **Material:** Plastic
- **Product Dimensions:** 3.5"D x 5"W x 4.53"H
- **Recommended Uses For Product:** Watch repair
- **Shape:** Cylindrical
- **Special Feature:** Portable
- **Style:** Open Ball
- **Target Audience:** Women

## Images

![OTOOLWORLD Watch Case Open Ball Friction Ball Watch Case Open Ball Battery Change - Image 1](https://m.media-amazon.com/images/I/61gXliQXl2L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple and very effective.
*by I***R on December 29, 2025*

It worked amazingly, I was surprised how easily unscrewed the back of my both watches.

### ⭐⭐⭐⭐⭐ Opened a s stubborn watch case back
*by R***R on May 31, 2025*

Worked great on a stubborn watch back. I saw a review video by a watch repair person that went over the various types of screw case back opening tools. Surprisingly these ball types came out near the top. What's good about these is there is no chance of scratching the case. This tool is for screw back cases only. Snap backs need a different type of wedge tool. When coupled with a case holding vise opening a screw back case is rather easy. It requires some effort and patience. Make sure the ball and case back are clean. No choice of color but I got blue.

### ⭐⭐⭐⭐⭐ Very good and also cheap
*by Y***A on January 9, 2026*

Cheap and good

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-02-18*